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/*
 * Copyright (c) 2011-2019, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package boofcv.alg.distort.impl;

import boofcv.alg.distort.ImageDistort;
import boofcv.struct.distort.PixelTransform;
import boofcv.struct.image.GrayU8;
import boofcv.struct.image.ImageGray;
import boofcv.struct.image.Planar;
import georegression.struct.point.Point2D_F32;

/**
 * Implementation of {@link ImageDistort} for {@link Planar} images.
 * 
 * @author Peter Abeles
 */
public class ImplImageDistort_PL,Output extends ImageGray>
		implements ImageDistort,Planar> {

	ImageDistort layerDistort;

	public ImplImageDistort_PL(ImageDistort layerDistort) {
		this.layerDistort = layerDistort;
	}

	@Override
	public void setModel(PixelTransform dstToSrc) {
		layerDistort.setModel(dstToSrc);
	}

	@Override
	public void apply(Planar srcImg, Planar dstImg) {
		if( srcImg.getNumBands() != dstImg.getNumBands() )
			throw new IllegalArgumentException("Number of bands must be the same. "+srcImg.getNumBands()+" vs "+dstImg.getNumBands());
		int N = srcImg.getNumBands();
		
		for( int i = 0; i < N; i++ ) {
			layerDistort.apply(srcImg.getBand(i),dstImg.getBand(i));
		}
	}

	@Override
	public void apply(Planar srcImg, Planar dstImg, GrayU8 mask ) {
		if( srcImg.getNumBands() != dstImg.getNumBands() )
			throw new IllegalArgumentException("Number of bands must be the same. "+srcImg.getNumBands()+" vs "+dstImg.getNumBands());
		int N = srcImg.getNumBands();

		for( int i = 0; i < N; i++ ) {
			// save a little bit of CPU by only computing the mask once
			if( i == 0 )
				layerDistort.apply(srcImg.getBand(i),dstImg.getBand(i),mask);
			else
				layerDistort.apply(srcImg.getBand(i),dstImg.getBand(i));
		}
	}

	@Override
	public void apply(Planar srcImg, Planar dstImg,
					  int dstX0, int dstY0, int dstX1, int dstY1) {
		if( srcImg.getNumBands() != dstImg.getNumBands() )
			throw new IllegalArgumentException("Number of bands must be the same. "+srcImg.getNumBands()+" vs "+dstImg.getNumBands());
		int N = srcImg.getNumBands();

		for( int i = 0; i < N; i++ ) {
			layerDistort.apply(srcImg.getBand(i),dstImg.getBand(i),dstX0, dstY0, dstX1, dstY1);
		}
	}

	@Override
	public void setRenderAll(boolean renderAll) {
		layerDistort.setRenderAll(renderAll);
	}

	@Override
	public boolean getRenderAll() {
		return layerDistort.getRenderAll();
	}

	@Override
	public PixelTransform getModel() {
		return layerDistort.getModel();
	}
}